Tire.



E. A. SUNDVALL.

TIRE.

APPLIOATION` FILED FEB. 25,1911. 1,003,071

wv W w n vento@ @Www/tir.

Patented Sept. 12, ljll.

UNITED- STATES PATENTonFIon.

EDWIN A. SUNDVALL, OF

Specification of Letters atent.

STOCKHOLM, WISCONSIN.

TIRE.

Patented Sept. 12, 1911.

Application filed- February 25, 1911. Serial No. 610,866.

bTo l'all whom fait may concern:

use of springs constructed and arranged in a novel and useful manner, and-without the use of cushion or pneumatic tires or "rub. ber, that are so liable to become punctured or otherwise damaged and rendered unfit for use. j

VVit-h this and other objects in view, as will more fully appear as the-description proceeds, the invent-ion .consists in certain construct-ions, arrangements and ombinations 4of the parts that I shall hereinafter fully describe and claim.

. For a full understandingof theinvention reference is to be' had 'to the following de scripton "and accompanying drawings, in which Figure 1 isa transverse sectional view of a tire embodyingA the improvements of myv l invention. Fig. 2 is a fragmentary view of the protective layer of the device which is composed of flat steel springs, and Fig. 3 is a segmental view'of the oufter ring, illustrating in connection therewith a portion of; the tr'ead element which is composed of interlocked loosely connect-ed plates.

Corresponding and like parts are referred to in the following description and. indi* cated in all the views of the accompanying drawings by #the same reference characters. My improved t/ire embodies any desired number of cushioning springs 1 that are arranged in a circumferentially extending series, preferably close together, as illustrated in the accompanying drawing, each of the springs being preferably provided with relatively flat or straight side edges extending from labout the middle parts toward the base, as indicated at 2, whereby the springs, when compressed maybe permitted to spread laterally without injuriously adecting the envelopingparts.

lnthe present emboldiment ofthe inven! tion the cushioning springs 1 rest upon flat portions 3 of a channeled ring 4, said springs being connected togetherin any desired way, and being preferably secured to the flat portions 3 of the channeled ring 4 by means of clenching lugs 5, which are struck up from the sheet metal of which the 'part 4 is formed, and

,bent over the innermost or base portions of the springs so as to securely hold them in place. The series of springs 1 is enveloped by a protective layer composed of obliquely extending and transversely curved flat springs 6 that are interlaced, as best illustrated in Fig. 2. Preferably the ends of the springs 6 are relatively narrow, so that the .entire protective layerwill conform to the proper curvature necessary to encircle the rim of a Wheel. The said ends' are provided with longitudinally extendingslots 7 which4 overlap and receive pivot studs or rivets 8,

so as to yieldingly connect the ends of the springs 6 and-permit the sameto move one upon the other, when the tire is compressed, without any binding action. The springs 6 extend at their ends down between the channeled ring 4, and an outer complemental ring 9, the said ringsbeingspaced from each other sufficiently toi allowthe proper freedom of movement off thie springs 6. The ring 9 is'seated in al grodve or slot in the rim l0 of the wheel and is provided at any desired intervals with nibs 1 1 seated in sockets in the rim of the wheel whereby to prevent displacement of the ring. The ring 9 is secured in spaced relation to the inner ring 4 by means of any desired number of spacing blocks 12, arranged at any desired intervals and rived or otherwise secured -to ,the rings.4.and '9. Preferably the body 'portion of the tire/thus formed is made in two semi-circularl''sections, whereby the tire the rim of a whe l, the two sections having` their ends overla ped and secured together by bolts 13 or si ilar fastening devices. vj

4may be easily ap lied to and detached'from f In connection-withr the body portion of my improved tir, I preferably employ ,ia thread element which is composed of an'y desired number oif sheet metal or malleableV .iron plates 14, saiid plates being dished, in

order-t0 correspond Vto the curvature ofthe body portion of the tire and eachf'being preferably provi ed with nibs or. protuberlences 1 5 designed to produce a nonskidding surface. The plates 14 are formed at their adjoining' edges With interlocking curved arms 16, so as to permit the requisite freedom of movement. The plates are.

also formed on their margin with slots 17 that are designed for engagement with .split rings 18, the' latter being in turn ing, any stress or impact imposed at any point upon the tread surface of the tire will be taken up by the protecting envelop composed of the springs 6, and betr-ansmitted -to the cushioning springs 1, all

. shocks 'being'thereby effectively absorbed,

and withoutthe use of the cushion or pneumatic tires Which are so liable to become injured and rendered unfit for service. Moreover, it is evident thatl a tire constructed in accordance with my invention will be rela-A tively long lived, as the parts are of simple construction and durable, and not liable to get out of order.

It is,.of course, to be understood that my invention isl not limited to any particular construction of rim, or to any means of securing the tire to a rim.

Having thus described the invention what is claimed as new is:-

1. A tire of the character described, comprising a plurality of cushioning elements, means. for supporting the sa'me, a protective layer consistin of a plurality of obliquely extending lnterlaced Bat springs I formed at their overlapping ends with slots, rivet studs secured in said slots, the protective layer encircling the layer of cushioning elements, and means for holdin the protective layer over the cushionin e ements.

2. tire of the character' escribed, comprising a plurality of cushioning elements, an inner ring in which said elements are carried, said ring being channeled, an outer channeled ring, spacing devices encircledbetween the inner portions of said lringsand connected to the .same to hold them in spaced relation to each other, the.outer most 'ring being formed at intervalswith inwardly projecting nibs, for the purpose specified, a protectlve layer encircling the cushioning elements and havingits side edges inserted in between the outer edges of the rings, anda tread element envelopin the protective layer and secured at its si e edges to the outer ring.

lIn testimony whereof, affix my signature in presence of twov witnesses.

EDWIN A, sUNDvALL. [L 8.]

Witnesses:

A. S. Oris, L. A. WARREN. 

